Magnetic structure of (Fe0.97Cr0.03)2P
Sudhish Kumar S K Paranjpe Bipin K Srivastava Anjali Krishnamurthy V C Sahni
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Magnetic behaviour of di-metal iron phosphide with a small substitution of iron by chromium, (Fe0.97Cr0.03)2P, has been studied using SQUID magnetometry and powder neutron diffraction. It is paramagnetic at temperatures above ∼180 K with persisting short range ferromagnetic (FM) order. At lower temperatures three different regions of magnetic behaviour are identified. FM order evolves in the region 180 K-120 K but much more slowly and with much less magnetic moments than in Fe2P. In the region 120 K-50 K negative exchange interactions gain some importance leading to a loss of FM order. Below 50 K FM interactions again dominate. Pinning centres influence the behaviour at low temperature up to ∼100 K.
Sudhish Kumar1 S K Paranjpe1 2 Bipin K Srivastava1 Anjali Krishnamurthy1 V C Sahni1 3
Volume 97, 2023
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